*{
    margin: 0;
    padding: 0;
}
body{

    font-family: "微软雅黑";
    color: #fff;
}
ul,li{
    list-style: none;
}

a.houver{
    cursor:pointer
}
input{
    border:none;
    background:none;
    outline: none;
}
.left{
    float: left;
}
.right{
    float: right;
}
/*top开始*/
#top img{
    margin-left: 6.2rem;
}
#top p{
    margin-top: 2rem;
    margin-right: 6.2rem;
}
#top a:hover{
    color: blue;
}
.top_p{
    margin-top: 2rem;
    margin-right: 1rem;
}
#top a:hover{
    color: blue;
}

.user_div{
    position: relative;
    width: 350px;;
    font-size: 3rem;
}

.user_div:hover{
    cursor: pointer;
}
.top_p{
    font-size: 3rem;
}
.user_div #logout{
    position: absolute;
    margin-top: 1.2rem;;
    margin-left: 1rem;;
    font-size: 2rem;
    color: #da1a1a;
    z-index: 1;
}
#logout.hover{
    cursor:pointer;
}

/*top结束*/
/*导航*/
#nav{
    height: 7rem;
}
#nav ul{
    height: 7rem;
}
#nav ul li{
    height: 100%;
    width: 16.6rem;
}
#nav a{
    height: 100%;
    width: 100%;
    font-size: 30px;
}
#serch{
    background-color: #fff;
    border-radius: 10rem;
    width: 36rem;
    height: 4rem;
    margin-top:1.5rem;
    margin-right: 2rem;
}
#serch input{
    color: #333;
    position: relative;
    top:0rem;
    height: 100%;
    font-size: 1.8rem;
    width: 85%;
    margin-left:1rem;
}
#serch img{
    cursor:pointer;
    position: relative;
    top:-0.5rem;
}
/*导航结束*/
/*footer*/
footer{
    background-color: #000000;
    width: 100%;
    height: 39.7rem;
    margin-top:30px;
    box-shadow:0 -4px 16px #fff;
    font-size: 18px;
    color: #fff;
}
#footer_font{
    display: flex;
    justify-content: space-between;
    width: 120rem;
    margin: auto;
}
#footer_font a{
    font-size: 1.8rem;
    color: #fff;
    cursor:pointer;
}
#footer_font p{
    line-height: 25px;
    color: #fff;
}
.footer_url{
    width: 100%;
    margin-top: 30px;
    border-top: #fff solid 1px;
    padding-top: 30px;
    color: #fff;
}
/*footer结束*/
html{
    font-size: 62.5%;
}
/*回到顶部*/
.arrow{
    border: 9px solid transparent;
    border-bottom-color: #3DA0DB;
    width: 0px;
    height: 0px;
    top:0px
}
.stick{
    width: 8px;
    height: 14px;
    border-radius: 1px;
    background-color: #3DA0DB;
    top:15px;
}
#back_top div{
    position: absolute;
    margin: auto;
    right: 0px;
    left: 0px;
}
#back_top{
    background-color: #dddddd;
    height: 38px;
    width: 38px;
    border-radius: 3px;
    display: block;
    cursor: pointer;
    position: fixed;
    right: 50px;
    bottom: 100px;
    display: none;
}
